#include<stdio.h>
int main(){
	int n,m,i,j,k,r;
		scanf("%d%d", &n,&m);
	for(i = n; i <= m; i++){
		for(j = 2; j <= i/2; j++){
			r = i%j;
			k = 0;
			if(r == 0){
				k = 1;
				break;
			}
		}
		if(k == 0)
			printf("%d ", i);
	}
	return 0;
}